Home / 13,984.28-19,298.64-7,611.20

Finding the Fourth Proportional to 13,984.28, 19,298.64 and 7,611.20

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Solution

The fourth proportional to 13,984.28, 19,298.64 and 7,611.20 is: 10,503.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.28 : 19,298.64 = 7,611.20 : x
  2. Step 2: Convert to fraction form
    13,984.28/19,298.64 = 7,611.20/x
  3. Step 3: Cross multiply
    13,984.28x = 19,298.64 × 7,611.20
  4. Step 4: Simplify right side
    13,984.28x = 146,885,808.77
  5. Step 5: Solve for x
    x = 146,885,808.77/13,984.28
  6. Step 6: Final answer
    x = 10,503.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.